This 16-model series of spring engaged, air released brakes are designed for heavy-duty industrial applications requiring high torque and low inertia. Intended for horizontal shaft mounting only. Dual Faced Elements have two interface surfaces; Quad Faced Elements have four interface surfaces. Available with either Standard or High coefficient friction facings. Single or Double Disc Assemblies available. Rugged design ensures long product life. O-ring sealed piston & cylinder design reduces maintenance costs.